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authorMarek Lindner <lindner_marek@yahoo.de>2010-05-07 21:47:18 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2010-05-11 13:42:39 -0700
commit47fdf097c348673dced571da8a15939005219da0 (patch)
treef5fbc972cf243db502a225a08ed18bd6eee56834 /drivers/staging/batman-adv/bat_sysfs.c
parent0887635b26e0cb6369c0438e55d9323d3aef3f69 (diff)
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Staging: batman-adv: convert multiple /proc files to use sysfs
This is the first patch in a series of patches which aim to convert all batman-adv /proc files to sysfs. To keep the changes in a digestable size it has been split up into smaller chunks. During the transition period batman-adv will use /proc as well as sysfs. As a first step the following files have been converted: aggregate_ogm, originators, transtable_global, transtable_local Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/batman-adv/bat_sysfs.c')
-rw-r--r--drivers/staging/batman-adv/bat_sysfs.c272
1 files changed, 272 insertions, 0 deletions
diff --git a/drivers/staging/batman-adv/bat_sysfs.c b/drivers/staging/batman-adv/bat_sysfs.c
new file mode 100644
index 00000000000..62931186ff3
--- /dev/null
+++ b/drivers/staging/batman-adv/bat_sysfs.c
@@ -0,0 +1,272 @@
+/*
+ * Copyright (C) 2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#include "main.h"
+#include "bat_sysfs.h"
+#include "translation-table.h"
+#include "originator.h"
+#include "hard-interface.h"
+
+#define to_dev(obj) container_of(obj, struct device, kobj)
+
+struct bat_attribute {
+ struct attribute attr;
+ ssize_t (*show)(struct kobject *kobj, struct attribute *attr,
+ char *buf);
+ ssize_t (*store)(struct kobject *kobj, struct attribute *attr,
+ char *buf, size_t count);
+};
+
+#define BAT_ATTR(_name, _mode, _show, _store) \
+struct bat_attribute bat_attr_##_name = { \
+ .attr = {.name = __stringify(_name), \
+ .mode = _mode }, \
+ .show = _show, \
+ .store = _store, \
+};
+
+#define BAT_BIN_ATTR(_name, _mode, _read, _write) \
+struct bin_attribute bat_attr_##_name = { \
+ .attr = { .name = __stringify(_name), \
+ .mode = _mode, }, \
+ .read = _read, \
+ .write = _write, \
+};
+
+static ssize_t show_aggr_ogm(struct kobject *kobj, struct attribute *attr,
+ char *buff)
+{
+ struct device *dev = to_dev(kobj->parent);
+ struct bat_priv *bat_priv = netdev_priv(to_net_dev(dev));
+ int aggr_status = atomic_read(&bat_priv->aggregation_enabled);
+
+ return sprintf(buff, "status: %s\ncommands: enable, disable, 0, 1 \n",
+ aggr_status == 0 ? "disabled" : "enabled");
+}
+
+static ssize_t store_aggr_ogm(struct kobject *kobj, struct attribute *attr,
+ char *buff, size_t count)
+{
+ struct device *dev = to_dev(kobj->parent);
+ struct net_device *net_dev = to_net_dev(dev);
+ struct bat_priv *bat_priv = netdev_priv(net_dev);
+ int aggr_tmp = -1;
+
+ if (((count == 2) && (buff[0] == '1')) ||
+ (strncmp(buff, "enable", 6) == 0))
+ aggr_tmp = 1;
+
+ if (((count == 2) && (buff[0] == '0')) ||
+ (strncmp(buff, "disable", 7) == 0))
+ aggr_tmp = 0;
+
+ if (aggr_tmp < 0) {
+ if (buff[count - 1] == '\n')
+ buff[count - 1] = '\0';
+
+ printk(KERN_INFO "batman-adv:Invalid parameter for 'aggregate OGM' setting on mesh %s received: %s\n",
+ net_dev->name, buff);
+ return -EINVAL;
+ }
+
+ if (atomic_read(&bat_priv->aggregation_enabled) == aggr_tmp)
+ return count;
+
+ printk(KERN_INFO "batman-adv:Changing aggregation from: %s to: %s on mesh: %s\n",
+ atomic_read(&bat_priv->aggregation_enabled) == 1 ?
+ "enabled" : "disabled", aggr_tmp == 1 ? "enabled" : "disabled",
+ net_dev->name);
+
+ atomic_set(&bat_priv->aggregation_enabled, (unsigned)aggr_tmp);
+ return count;
+}
+
+static BAT_ATTR(aggregate_ogm, S_IRUGO | S_IWUSR,
+ show_aggr_ogm, store_aggr_ogm);
+
+static struct bat_attribute *mesh_attrs[] = {
+ &bat_attr_aggregate_ogm,
+ NULL,
+};
+
+static ssize_t transtable_local_read(struct kobject *kobj,
+ struct bin_attribute *bin_attr,
+ char *buff, loff_t off, size_t count)
+{
+ struct device *dev = to_dev(kobj->parent);
+ struct net_device *net_dev = to_net_dev(dev);
+
+ rcu_read_lock();
+ if (list_empty(&if_list)) {
+ rcu_read_unlock();
+
+ if (off == 0)
+ return sprintf(buff,
+ "BATMAN mesh %s disabled - please specify interfaces to enable it\n",
+ net_dev->name);
+
+ return 0;
+ }
+ rcu_read_unlock();
+
+ return hna_local_fill_buffer_text(net_dev, buff, count, off);
+}
+
+static ssize_t transtable_global_read(struct kobject *kobj,
+ struct bin_attribute *bin_attr,
+ char *buff, loff_t off, size_t count)
+{
+ struct device *dev = to_dev(kobj->parent);
+ struct net_device *net_dev = to_net_dev(dev);
+
+ rcu_read_lock();
+ if (list_empty(&if_list)) {
+ rcu_read_unlock();
+
+ if (off == 0)
+ return sprintf(buff,
+ "BATMAN mesh %s disabled - please specify interfaces to enable it\n",
+ net_dev->name);
+
+ return 0;
+ }
+ rcu_read_unlock();
+
+ return hna_global_fill_buffer_text(net_dev, buff, count, off);
+}
+
+static ssize_t originators_read(struct kobject *kobj,
+ struct bin_attribute *bin_attr,
+ char *buff, loff_t off, size_t count)
+{
+ /* FIXME: orig table should exist per batif */
+ struct device *dev = to_dev(kobj->parent);
+ struct net_device *net_dev = to_net_dev(dev);
+
+ rcu_read_lock();
+ if (list_empty(&if_list)) {
+ rcu_read_unlock();
+
+ if (off == 0)
+ return sprintf(buff,
+ "BATMAN mesh %s disabled - please specify interfaces to enable it\n",
+ net_dev->name);
+
+ return 0;
+ }
+
+ if (((struct batman_if *)if_list.next)->if_active != IF_ACTIVE) {
+ rcu_read_unlock();
+
+ if (off == 0)
+ return sprintf(buff,
+ "BATMAN mesh %s disabled - primary interface not active\n",
+ net_dev->name);
+
+ return 0;
+ }
+ rcu_read_unlock();
+
+ return orig_fill_buffer_text(buff, count, off);
+}
+
+static BAT_BIN_ATTR(transtable_local, S_IRUGO, transtable_local_read, NULL);
+static BAT_BIN_ATTR(transtable_global, S_IRUGO, transtable_global_read, NULL);
+static BAT_BIN_ATTR(originators, S_IRUGO, originators_read, NULL);
+
+static struct bin_attribute *mesh_bin_attrs[] = {
+ &bat_attr_transtable_local,
+ &bat_attr_transtable_global,
+ &bat_attr_originators,
+ NULL,
+};
+
+int sysfs_add_meshif(struct net_device *dev)
+{
+ struct kobject *batif_kobject = &dev->dev.kobj;
+ struct bat_priv *bat_priv = netdev_priv(dev);
+ struct bat_attribute **bat_attr;
+ struct bin_attribute **bin_attr;
+ int err;
+
+ /* FIXME: should be done in the general mesh setup
+ routine as soon as we have it */
+ atomic_set(&bat_priv->aggregation_enabled, 1);
+
+ bat_priv->mesh_obj = kobject_create_and_add(SYSFS_IF_MESH_SUBDIR,
+ batif_kobject);
+ if (!bat_priv->mesh_obj) {
+ printk(KERN_ERR "batman-adv:Can't add sysfs directory: %s/%s\n",
+ dev->name, SYSFS_IF_MESH_SUBDIR);
+ goto out;
+ }
+
+ for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr) {
+ err = sysfs_create_file(bat_priv->mesh_obj,
+ &((*bat_attr)->attr));
+ if (err) {
+ printk(KERN_ERR "batman-adv:Can't add sysfs file: %s/%s/%s\n",
+ dev->name, SYSFS_IF_MESH_SUBDIR,
+ ((*bat_attr)->attr).name);
+ goto rem_attr;
+ }
+ }
+
+ for (bin_attr = mesh_bin_attrs; *bin_attr; ++bin_attr) {
+ err = sysfs_create_bin_file(bat_priv->mesh_obj, (*bin_attr));
+ if (err) {
+ printk(KERN_ERR "batman-adv:Can't add sysfs file: %s/%s/%s\n",
+ dev->name, SYSFS_IF_MESH_SUBDIR,
+ ((*bin_attr)->attr).name);
+ goto rem_bin_attr;
+ }
+ }
+
+ return 0;
+
+rem_bin_attr:
+ for (bin_attr = mesh_bin_attrs; *bin_attr; ++bin_attr)
+ sysfs_remove_bin_file(bat_priv->mesh_obj, (*bin_attr));
+rem_attr:
+ for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr)
+ sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr));
+
+ kobject_put(bat_priv->mesh_obj);
+ bat_priv->mesh_obj = NULL;
+out:
+ return -ENOMEM;
+}
+
+void sysfs_del_meshif(struct net_device *dev)
+{
+ struct bat_priv *bat_priv = netdev_priv(dev);
+ struct bat_attribute **bat_attr;
+ struct bin_attribute **bin_attr;
+
+ for (bin_attr = mesh_bin_attrs; *bin_attr; ++bin_attr)
+ sysfs_remove_bin_file(bat_priv->mesh_obj, (*bin_attr));
+
+ for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr)
+ sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr));
+
+ kobject_put(bat_priv->mesh_obj);
+ bat_priv->mesh_obj = NULL;
+}